Tft Lcd Panel; Table 19. Access To Tft Lcd Resources With Fmc Address Lines A0 And A1; Table 20. Assignment Of Cn19 Connector Terminals Of Tft Lcd Panel - ST STM32L476G-EVAL User Manual

UM1855
2.16

TFT LCD panel

STM32L476G-EVAL is delivered with MB989P, a daughterboard plugged into the CN19
extension connector. It bears a TFT 2.8-inch color LCD panel with resistive touchscreen and
an on-board controller.
Thanks to level shifters on all signal lines, the TFT LCD panel can operate with the entire
operating voltage range of STM32L476G-EVAL.
The TFT LCD panel is attached to the 16-bit data bus and accessed with FMC. The base
address is 0x6800 0000, corresponding to NOR/SRAM3 bank1. The panel is selected with
LCD_NE3 chip select signal generated by PG10 port of the STM32L476ZGT6. Address
lines A0 and A1 determine the panel resources addressed, as depicted in
Table 20 gives the CN19 extension connector terminal assignment.

Table 19. Access to TFT LCD resources with FMC address lines A0 and A1

0x6800_0000
0x6800_0002
0x6800_0004
0x6800_0006

Table 20. Assignment of CN19 connector terminals of TFT LCD panel

CN19
terminal
1
3
5
7
9
11
13
15
17
19
21
23 BL_CONTROL
25
27
29
31
33
All manuals and user guides at all-guides.com
Section 2.18 provides further information.
Address A1
Terminal MCU
name port
CSN PG10
WRN PD5
RSTN RESET#
D1 PD15
D3 PD1
D5 PE8
D7 PE10
D9 PE12
D11 PE14
D13 PD8
D15 PD10
-
+3V3 -
GND -
SDO -
XL I/O expander_X-
YD I/O expander_Y-
DocID027351 Rev 3
Hardware layout and configuration
A0
0 0
0 1 Read Graphic RAM (GRAM)
1 0
1 1 Write graphic RAM (GRAM)
CN19 Terminal
terminal name
2 RS
4 RDN
6 D0
8 D2
10 D4
12 D6
14 D8
16 D10
18 D12
20 D14
22 BL_GND
24 +3V3
26 26
28 BL_VDD
30 SDI
32 XR
34 YU
Table 19.
Usage
Read register
Write register
MCU
port
PF0
PD4
PD14
PD0
PE7
PE9
PE11
PE13
PE15
PD9
-
-
-
-
-
I/O expander_X+
I/O expander_Y+
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